Setyoko, A., T. Rahardjo, and N. Anita. “EFFECTIVITY IMPROVEMENT OF HYBRID PROJECT MANAGEMENT WATER-SCRUM-FALL WITH SIX SIGMA IMPLEMENTATION”. JITK (Jurnal Ilmu Pengetahuan Dan Teknologi Komputer), Vol. 10, no. 1, Aug. 2024, pp. 124 -31, doi:10.33480/jitk.v10i1.5539.